He had been by his side since he was young. They grew up together and shared joys and sorrows, but there was always a piano between them... Mu Chen was the son of Lin Foji, a piano teacher. His personality had changed a lot since he met Lin Foji; no one knew that it was a young love, and Mu Chen tried his best to hide it, not wanting anyone to notice. Soon, due to an accident, Mu Chen disappeared from Lin Feoji's life. When we meet again after many years, who protects whom? Who is sad for whom? The silent love between Mu Chen's distant brother and the tomboy, the forbidden and unrecognized love for Lily, the love between Lin Fuji and the mysterious playmate in childhood... Xia Ling Huzi presents you a corner of society, the emotions behind the sunshine!